1211220101002 has 8 divisors (see below), whose sum is σ = 1837243973700. Its totient is φ = 598805443104.

The previous prime is 1211220100967. The next prime is 1211220101033. The reversal of 1211220101002 is 2001010221121.

It can be written as a sum of positive squares in 2 ways, for example, as 1179024617241 + 32195483761 = 1085829^2 + 179431^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3402303477 + ... + 3402303832.

Almost surely, 2^{1211220101002} is an apocalyptic number.

1211220101002 is a deficient number, since it is larger than the sum of its proper divisors (626023872698).

1211220101002 is an equidigital number, since it uses as much as digits as its factorization.

1211220101002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6804607400.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1211220101002 its reverse (2001010221121), we get a palindrome (3212230322123).

The spelling of 1211220101002 in words is "one trillion, two hundred eleven billion, two hundred twenty million, one hundred one thousand, two".